1、精選優(yōu)質(zhì)文檔-傾情為你奉上 %本程序的功能是用牛頓拉夫遜法進(jìn)行潮流計(jì)算n=input(請輸入節(jié)點(diǎn)數(shù):n=);nl=input(請輸入支路數(shù):nl=);isb=input(請輸入平衡母線節(jié)點(diǎn)號:isb=);pr=input(請輸入誤差精度:pr=);B1=input(請輸入由各支路參數(shù)形成的矩陣:B1=);B2=input(請輸入各節(jié)點(diǎn)參數(shù)形成的矩陣:B2=);Y=zeros(n); e=zeros(1,n);f=zeros(1,n);V=zeros(1,n); O=zeros(1,n);S1=zeros(nl);for i=1:nl if B1(i,6)=0 p=B1(i,1);q=B1(i,

2、2); else p=B1(i,2);q=B1(i,1); end Y(p,q)=Y(p,q)-1./(B1(i,3)*B1(i,5); Y(q,p)=Y(p,q); Y(q,q)=Y(q,q)+1./(B1(i,3)*B1(i,5)2)+B1(i,4)./2; Y(p,p)=Y(p,p)+1./B1(i,3)+B1(i,4)./2;end%求導(dǎo)納矩陣disp(導(dǎo)納矩陣Y=);disp(Y);G=real(Y);B=imag(Y);for i=1:n e(i)=real(B2(i,3); f(i)=imag(B2(i,3); V(i)=B2(i,4);endfor i=1:n S(i)=B2(

3、i,1)-B2(i,2); B(i,i)=B(i,i)+B2(i,5);endP=real(S);Q=imag(S);ICT1=0;IT2=1;N0=2*n;N=N0+1;a=0;while IT2=0 IT2=0;a=a+1; for i=1:n if i=isb C(i)=0; D(i)=0; for j1=1:n C(i)= C(i)+G(i,j1)*e(j1)-B(i,j1)*f(j1); D(i)= D(i)+G(i,j1)*f(j1)+B(i,j1)*e(j1); end P1=C(i)*e(i)+f(i)*D(i); Q1=f(i)*C(i)-D(i)*e(i); V2=e(i)

4、2+f(i)2;%117頁malihong打if B2(i,6)=3 DP=P(i)-P1; DQ=Q(i)-Q1; for j1=1:n if j1=isb&j1=i X1=-G(i,j1)*e(i)-B(i,j1)*f(i); X2=B(i,j1)*e(i)-G(i,j1)*f(i); X3=X2; X4=-X1; p=2*i-1;q=2*j1-1;J(p,q)=X3;J(p,N)=DQ; m=p+1; J(m,q)=X1;J(m,N)=DP;q=q+1;J(p,q)=X4;J(m,q)=X2; elseif j1=i&j1=isb X1=-C(i)-G(i,i)*e(i)-B(i,i)*

5、f(i); X2=-D(i)+B(i,i)*e(i)-G(i,i)*f(i); X3=D(i)+B(i,i)*e(i)-G(i,i)*f(i); X4=-C(i)+G(i,i)*e(i)+B(i,i)*f(i); p=2*i-1;q=2*j1-1;J(p,q)=X3;J(p,N)=DQ;m=p+1; J(m,q)=X1;J(m,N)=DP;q=q+1;J(p,q)=X4;J(m,q)=X2; end endelse DP=P(i)-P1; DV=V(i)2-V2; for j1=1:n if j1=isb&j1=i X1=-G(i,j1)*e(i)-B(i,j1)*f(i); X2=B(i,j

6、1)*e(i)-G(i,j1)*f(i); X5=0; X6=0; p=2*i-1;q=2*j1-1;J(p,q)=X5;J(p,N)=DV; m=p+1; J(m,q)=X1;J(m,N)=DP;q=q+1;J(p,q)=X6;J(m,q)=X2; elseif j1=i&j1=isb X1=-C(i)-G(i,i)*e(i)-B(i,i)*f(i); X2=-D(i)+B(i,i)*e(i)-G(i,i)*f(i);%118頁孟打印 X5=-2*e(i); X6=-2*f(i); p=2*i-1;q=2*j1-1;J(p,q)=X5;J(p,N)=DV; m=p+1; J(m,q)=X1;

7、J(m,N)=DP;q=q+1;J(p,q)=X6; J(m,q)=X2; end end end endend%求雅可比矩陣for k=3:N0 k1=k+1;N1=N; for k2=k1:N1 J(k,k2)=J(k,k2)./J(k,k); end J(k,k)=1; if k=3; k4=k-1; for k3=3:k4 for k2=k1:N1 J(k3,k2)= J(k3,k2)-J(k3,k)*J(k,k2); end J(k3,k)=0; end if k=N0,break;end for k3=k1:N0 for k2=k1:N1 J(k3,k2)=J(k3,k2)-J(k

8、3,k)*J(k,k2); end J(k3,k)=0; end else for k3=k1:N0 for k2=k1:N1 J(k3,k2)= J(k3,k2)-J(k3,k)*J(k,k2); end J(k3,k)=0; end endend %119頁zhengtong打%for k=3:2:N0-1 L=(k+1)./2; e(L)=e(L)-J(k,N); k1=k+1; f(L)=f(L)-J(k1,N);endfor k=3:N0 DET=abs(J(k,N); if DET=pr IT2=IT2+1; endendICT2(a)=IT2;ICT1=ICT1+1;end%用高

9、斯消去法解“w=-J*V”disp(迭代次數(shù));disp(ICT1);disp(沒有達(dá)到精度要求的個數(shù));disp(ICT2);for k=1:n V(k)=sqrt(e(k)2+f(k)2); shita(k)=atan(f(k)./e(k)*180/pi; E(k)=e(k)+f(k)*j;enddisp(各節(jié)點(diǎn)的實(shí)際電壓標(biāo)么值E為(節(jié)點(diǎn)號從小到大排列):);disp(E);disp(各節(jié)點(diǎn)的電壓大小V為(節(jié)點(diǎn)號從小到大排列):);disp(V);disp(各節(jié)點(diǎn)的電壓相角時shita為(節(jié)點(diǎn)號從小到大排列):);disp(shita);for p=1:n C(p)=0; for q=1:

10、n C(p)=C(p)+conj(Y(p,q)*conj(E(q); end S(p)=E(p)*C(p);end %120頁打disp(各節(jié)點(diǎn)的功率S為(節(jié)點(diǎn)號從小到大排列):);disp(S);disp(各條支路的首端功率Si為(順序同您輸入B1時一樣):);for i=1:nl if B1(i,6)=0 p=B1(i,1);q=B1(i,2); else p=B1(i,2);q=B1(i,1); endSi(p,q)=E(p)*(conj(E(p)*conj(B1(i,4)./2)+(conj(E(p)*B1(i,5)-conj(E(q)*conj(1./(B1(i,3)*B1(i,5); disp(Si(p,q);enddisp (各條支路的末端功率Sj為(順序同您輸入B1時一樣):);for i=1:nl if B1(i,6)=0 p=B1(i,1);q=B1(i,2); else p=B1(i,2);q=B1(i,1); endSj(q,p)=E(q)*(conj(E(q)*conj(B1(i,4)./2)+(conj(E(q)./B1(i,5)-conj(E(p)*conj(1./(B1(i,3)*B1(i,5); d